Browse Health
Family Practitioner, Primary Care Doctor
26 years of experience
Accepting new patients
License & Identifications

A medical license is required for a doctor to practice medicine in a particular state. Requirements vary by state but most require, at a minimum, post-graduate training in the doctor’s specific specialty. An NPI number is a national identifier unique to an individual health care provider and is managed by the Center for Medicare & Medicaid Services (CMS).

Learn more about Dr. David O'Brien:

View the full profile to get information on:

  1. Qualifications
  2. What's important to you

View full profile

Patient Reviews

Have you visited Dr. O'Brien? Share your experience.
Write a Review

Education & Awards

Dr. O'Brien graduated from University of California at Davis.


Dr. O'Brien has 3 hospital affiliations:

  • St. Mary Medical Center 
  • General Hospital 
  • ST Joseph Hospital-Eureka 

> > > > Dr. David O'Brien, MD, MS

Similar doctors nearby

Dr. Mazen Munir

Family Medicine
8 years experience
Apple Valley, CA

Dr. Ziad Sawan

Family Medicine
26 years experience
Apple Valley, CA

Dr. Cynthia Thomas

Family Medicine
15 years experience
Apple Valley, CA

Dr. Rodomelle Mungcal

Family Medicine
9 years experience
Apple Valley, CA

Dr. David Vargas

Family Medicine
42 years experience
Apple Valley, CA

Dr. Beverly Nester

Family Medicine
22 years experience
Apple Valley, CA
Search All Similar Doctors
Additional Information
Dr. David Raymond O'Brien MD and MS is a male Family Practitioner, has 26 years of experience and practices in Family Medicine.
Where does Dr. David R. O'Brien practice?
Dr. David O'Brien has 2 office locations.
Dr. David O'Brien practices Family Medicine near Apple Valley, CA.
Additional practice locations include: Eureka, CA.
See Apple Valley Family Physicians.